import android.os.Build;import android.os.Environment;import android.os.Process;import java.io.BufferedWriter;import java.io.File;import java.io.FileWriter;import java.io.IOException;import java.io.PrintWriter;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Locale;public class CrashHandler implements Thread.UncaughtExceptionHandler { private static final String TAG = "CrashHandler"; private static final boolean DEBUG = true; // 自定義存儲的目錄 private static final String PATH = Environment.getExternalStorageDirectory().getPath() + "/myApp/log/"; private static final String FILE_NAME = "crash"; private static final String FILE_NAME_SUFFIX = ".txt"; private String phoneInfo; private static CrashHandler instance = new CrashHandler(); private Thread.UncaughtExceptionHandler mDefaultCrashHandler; private CrashHandler() { } public static CrashHandler getInstance() {  return instance; } public void init() {  mDefaultCrashHandler = Thread.getDefaultUncaughtExceptionHandler();  Thread.setDefaultUncaughtExceptionHandler(this);  phoneInfo = getPhoneInformation(); } /**  * 這個是最關鍵的函數，當程序中有未被捕獲的異常，系統將會自動調用uncaughtException方法  * thread為出現未捕獲異常的線程，ex為未捕獲的異常，有了這個ex，我們就可以得到異常信息  */ @Override public void uncaughtException(Thread thread, Throwable ex) {  try {   //導出異常信息到SD卡中   dumpExceptionToSDCard(ex);   //這里可以上傳異常信息到服務器，便于開發人員分析日志從而解決bug   uploadExceptionToServer();  } catch (IOException e) {   e.printStackTrace();  }  ex.printStackTrace();  //如果系統提供默認的異常處理器，則交給系統去結束程序，否則就由自己結束自己  if (mDefaultCrashHandler != null) {   mDefaultCrashHandler.uncaughtException(thread, ex);  } else {   try {    Thread.sleep(2000); // 延遲2秒殺進程   } catch (InterruptedException e) {    e.printStackTrace();   }   android.os.Process.killProcess(Process.myPid());  } } private void dumpExceptionToSDCard(Throwable ex) throws IOException {  //如果SD卡不存在或無法使用，則無法把異常信息寫入SD卡  if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {   if (DEBUG) {    Log.e(TAG, "sdcard unmounted,skip dump exception");    return;   }  }  File dir = new File(PATH);  if (!dir.exists()) {   dir.mkdirs();  }  long current = System.currentTimeMillis();  String time = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.CHINA).format(new Date(current));  File file = new File(PATH + FILE_NAME + time + FILE_NAME_SUFFIX);  try {   PrintWriter pw = new PrintWriter(new BufferedWriter(new FileWriter(file)));   pw.println(time);   pw.println(phoneInfo);   pw.println();   ex.printStackTrace(pw);   pw.close();   Log.e(TAG, "dump crash info seccess");  } catch (Exception e) {   Log.e(TAG, e.getMessage());   Log.e(TAG, "dump crash info failed");  } } private void uploadExceptionToServer() {  // 將異常信息發送到服務器 } private String getPhoneInformation() {  StringBuilder sb = new StringBuilder();  sb.append("App version name:")    .append(BuildConfig.VERSION_NAME)    .append(", version code:")    .append(BuildConfig.VERSION_CODE).append("/n");  //Android版本號  sb.append("OS Version: ");  sb.append(Build.VERSION.RELEASE);  sb.append("_");  sb.append(Build.VERSION.SDK_INT).append("/n");  //手機制造商  sb.append("Vendor: ");  sb.append(Build.MANUFACTURER).append("/n");  //手機型號  sb.append("Model: ");  sb.append(Build.MODEL).append("/n");  //CPU架構  sb.append("CPU ABI:").append("/n");  for (String abi : Build.SUPPORTED_ABIS) {   sb.append(abi).append("/n");  }  return sb.toString(); }}

@Overridepublic void onCreate() { super.onCreate(); // init application... CrashHandler.getInstance().init();}